Skip to content Skip to navigation

Article: Soft-sediment adaptations in a new Silurian gastropod from Central Asia

Publication: Palaeontology
Volume: 38
Part: 4
Publication Date: November 1995
Page(s): 831 842
Author(s): A. P. Gubanov, J. S. Peel and I. A. Pianovskaya
DOI:
Addition Information (show/hide all)

Abstract

Specimens of the gastropod Isfarispira septata gen. et sp. nov., from the Silurian of Central Asia, are characterized by a large, lenticular, multi-whorled shell with a flattened base, a low rate of expansion of the broad whorls, internal septa at intermediate growth stages and a prominent circumbilical flange which closed off much of the umbilicus. These morphological features reflect adaptation to life on a soft substratum, collectively serving to inhibit sinking into the soft sediment by increasing the area of the basal surface. I. septata is interpreted as a sedentary, or only infrequently mobile gastropod.
PalAss Go! URL: http://go.palass.org/4o1 | Twitter: Share on Twitter | Facebook: Share on Facebook | Google+: Share on Google+